I know that you can use lemon grass oil in a swarm bait box, and that there are also a few products on market that you can buy to attract swarms. But somewhere I remember reading that you can put your un-wanted queens in a vile of rubbing alcohol and after they've been in there a while you can use this to attract swarms. Make your own swarm attractant ?
Does anyone know the proper procedure of doing this, or if it works ?